First off thanks are in order. It's great to be able to come here and ask questions and get answers from such friendly and informative people. Thanks everyone for all the great help that you always give me!<br /><br />OK. Here's the question. Mother has been collecting stamps since she was a little kid. She has piles of old stamps, some from the early 1900s. She wants to find out if any are rare, what they are worth, etc. Problem is she don't know anyone who is in to this sort of thing. Anyone have a link to any sites that can give us ideas? Or is there some kind of book or guide that I should own to give us a better idea of what we have? Thanks in advance for all the help!